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tgsi: scan for additional info: uses_fogcoord, uses_frontfacing

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This commit is contained in:
Brian Paul 2008-12-18 18:06:38 -07:00
parent 52406c80d6
commit db99ca3bc9
2 changed files with 37 additions and 15 deletions
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49
src/gallium/auxiliary/tgsi/tgsi_scan.c
View file

@ -2,6 +2,7 @@
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
* Copyright 2008 VMware, Inc. All rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
@ -79,38 +80,61 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
switch( parse.FullToken.Token.Type ) {
case TGSI_TOKEN_TYPE_INSTRUCTION:
{
struct tgsi_full_instruction *fullinst
const struct tgsi_full_instruction *fullinst
= &parse.FullToken.FullInstruction;
assert(fullinst->Instruction.Opcode < TGSI_OPCODE_LAST);
info->opcode_count[fullinst->Instruction.Opcode]++;
/* special case: scan fragment shaders for use of the fog
* input/attribute. The X component is fog, the Y component
* is the front/back-face flag.
*/
if (procType == TGSI_PROCESSOR_FRAGMENT) {
uint i;
for (i = 0; i < fullinst->Instruction.NumSrcRegs; i++) {
const struct tgsi_full_src_register *src =
&fullinst->FullSrcRegisters[i];
if (src->SrcRegister.File == TGSI_FILE_INPUT) {
const int ind = src->SrcRegister.Index;
if (info->input_semantic_name[ind] == TGSI_SEMANTIC_FOG) {
if (src->SrcRegister.SwizzleX == TGSI_SWIZZLE_X) {
info->uses_fogcoord = TRUE;
}
else if (src->SrcRegister.SwizzleX == TGSI_SWIZZLE_Y) {
info->uses_frontfacing = TRUE;
}
}
}
}
}
}
break;
case TGSI_TOKEN_TYPE_DECLARATION:
{
struct tgsi_full_declaration *fulldecl
const struct tgsi_full_declaration *fulldecl
= &parse.FullToken.FullDeclaration;
uint file = fulldecl->Declaration.File;
uint i;
for (i = fulldecl->DeclarationRange.First;
i <= fulldecl->DeclarationRange.Last;
i++) {
uint reg;
for (reg = fulldecl->DeclarationRange.First;
reg <= fulldecl->DeclarationRange.Last;
reg++) {
/* only first 32 regs will appear in this bitfield */
info->file_mask[file] |= (1 << i);
info->file_mask[file] |= (1 << reg);
info->file_count[file]++;
info->file_max[file] = MAX2(info->file_max[file], (int)i);
if (file == TGSI_FILE_INPUT) {
info->input_semantic_name[i] = (ubyte)fulldecl->Semantic.SemanticName;
info->input_semantic_index[i] = (ubyte)fulldecl->Semantic.SemanticIndex;
info->input_semantic_name[reg] = (ubyte)fulldecl->Semantic.SemanticName;
info->input_semantic_index[reg] = (ubyte)fulldecl->Semantic.SemanticIndex;
info->num_inputs++;
}
if (file == TGSI_FILE_OUTPUT) {
info->output_semantic_name[i] = (ubyte)fulldecl->Semantic.SemanticName;
info->output_semantic_index[i] = (ubyte)fulldecl->Semantic.SemanticIndex;
info->output_semantic_name[reg] = (ubyte)fulldecl->Semantic.SemanticName;
info->output_semantic_index[reg] = (ubyte)fulldecl->Semantic.SemanticIndex;
info->num_outputs++;
}
@ -133,9 +157,6 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
}
}
assert( info->file_max[TGSI_FILE_INPUT] + 1 == info->num_inputs );
assert( info->file_max[TGSI_FILE_OUTPUT] + 1 == info->num_outputs );
info->uses_kill = (info->opcode_count[TGSI_OPCODE_KIL] ||
info->opcode_count[TGSI_OPCODE_KILP]);

3
src/gallium/auxiliary/tgsi/tgsi_scan.h
View file

@ -41,7 +41,6 @@ struct tgsi_shader_info
{
uint num_tokens;
/* XXX eventually remove the corresponding fields from pipe_shader_state: */
ubyte num_inputs;
ubyte num_outputs;
ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS]; /**< TGSI_SEMANTIC_x */
@ -59,6 +58,8 @@ struct tgsi_shader_info
boolean writes_z; /**< does fragment shader write Z value? */
boolean uses_kill; /**< KIL or KILP instruction used? */
boolean uses_fogcoord; /**< fragment shader uses fog coord? */
boolean uses_frontfacing; /**< fragment shader uses front/back-face flag? */
};